Table 5. Correlation between BSA and sternal deviations/stability in all participants.

Variables	Pearson’s r	P value
Sternal gaps (mm) (n=91)
Right upper limb elevation
Anterior-posterior gap	0.099	0.866
Cranial-caudal gap	0.259	0.744
Bilateral upper limbs elevation
Anterior-posterior gap	−0.359	0.522
Cranial-caudal gap	−0.040	0.963
Difference between two postures
Anterior-posterior gap	−0.037	0.829
Cranial-caudal gap	−0.075	0.845
Numerical rating scale of pain
At rest (n=62)	−0.297	0.692
At right upper limb elevation (n=88)	−0.410	0.589
At sitting up (n=88)	−0.396	0.719

The r and P values were derived with the Pearson’s linear regression model. BSA, body surface area.